The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2016
Maternal plasma concentrations of the placental specific sFLT-1 variant, sFLT-1 e15a, in fetal growth restriction and preeclampsia.
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Palmer Kirsten R, Kaitu'u-Lino Tu'uhevaha J, Cannon Ping, Tuohey Laura, De Silva Manarangi S, Varas-Godoy Manuel, Acuña Stephanie, Galaz José, Tong Stephen, Illanes Sebastián E
Аннотация
OBJECTIVE: sFLT-1 e15a is a recently described sFlt-1 variant that is placental and primate specific. As such, it may have potential as a biomarker. Using a newly developed ELISA, we measured maternal plasma sFLT-1 e15a levels in women with fetal growth restriction and pre-eclampsia.
METHOD: We performed a nested case-control study where we measured total sFLT-1 and sFLT-1 e15a plasma protein concentrations. Samples, selected from a prospective cohort study, consisted of 87 healthy controls, 11 cases that developed term preeclampsia and 20 cases where there was fetal growth restriction. We also measured sFLT-1 and sFLT-1 e15a plasma concentrations in a separate cohort: 15 cases of preterm preeclampsia and 24 healthy controls.
RESULTS: The prospective case-control cohort demonstrated significantly increased sFLT-1 e15a among cases with term fetal growth restriction (p < 0.05). We also observed that total sFLT-1 (this ELISA indiscriminately detects all variants) was significantly increased in term preeclampsia (p < 0.0001), but not fetal growth restriction. The separate cohort of early-onset preeclamptics showed significantly increased sFLT-1 e15a levels (p < 0.0001).
CONCLUSION: Plasma sFLT-1 e15a is significantly increased in early-onset preeclampsia and term fetal growth restriction. Further assessment of the benefit for sFLT-1 e15a testing in prediction or diagnosis of these disease states is warranted.
METHOD: We performed a nested case-control study where we measured total sFLT-1 and sFLT-1 e15a plasma protein concentrations. Samples, selected from a prospective cohort study, consisted of 87 healthy controls, 11 cases that developed term preeclampsia and 20 cases where there was fetal growth restriction. We also measured sFLT-1 and sFLT-1 e15a plasma concentrations in a separate cohort: 15 cases of preterm preeclampsia and 24 healthy controls.
RESULTS: The prospective case-control cohort demonstrated significantly increased sFLT-1 e15a among cases with term fetal growth restriction (p < 0.05). We also observed that total sFLT-1 (this ELISA indiscriminately detects all variants) was significantly increased in term preeclampsia (p < 0.0001), but not fetal growth restriction. The separate cohort of early-onset preeclamptics showed significantly increased sFLT-1 e15a levels (p < 0.0001).
CONCLUSION: Plasma sFLT-1 e15a is significantly increased in early-onset preeclampsia and term fetal growth restriction. Further assessment of the benefit for sFLT-1 e15a testing in prediction or diagnosis of these disease states is warranted.